public string Encrypt(string tcStr, string tcPassword) >>> { >>> byte[] tcStrBytes = Encoding.ASCII.GetBytes(tcStr); >>> int tcStrLength = tcStrBytes.Length; >>> >>> string lcPassword = tcPassword + ((char) 0).ToString(); >>> byte[] lcPasswordBytes = Encoding.ASCII.GetBytes(lcPassword); >>> >>> int lnPassLen = lcPasswordBytes.Length; >>> int lnPassPos = 0; >>> >>> string lcStrOut = string.Empty; >>> >>> int lnPassNum = ((CipherGetPnum(tcPassword)/997 - 1)%254) + 1; >>> >>> for (int i = 0; i < tcStrLength; i++) >>> { >>> int lnNum01 = ((lnPassNum + (i - tcStrLength)) - 1); >>> lnPassNum = (Math.Abs(lnNum01)%254)*Math.Sign(lnNum01) + 1; >>> var lnByte = tcStrBytes[i] ^ (lnPassNum ^ lcPasswordBytes[lnPassPos]); >>> lcStrOut = lcStrOut + Convert.ToChar(lnByte==0 ? tcStrBytes[i] : lnByte & 0xFF); >>> lnPassPos = lnPassPos > lnPassLen ? 0 : lnPassPos + 1; >>> } >>> return lcStrOut; >>> }Quick test comparing results with the VFP version using string 'Test' and password 'Viv' shows identical results in VFP (returned asc values: 255,246,253,131) i.e. string length is 4. Your C# only returns first three values (i.e. string length 3)
>>string cTest1 = "ABC123"; >>string cTest1Encr; >>string cTest1Decr; >>cTest1Encr = Encrypt( cTest1, "123abc"); >>cTest1Decr = Encrypt( cTest1Encr, "123abc"); >>>>